Autonomous system
AS11470 RSNA-ASN
Unclassified ARIN
Summary
Radiological Society of North America
enterprise research legacy
RSNA-ASN is the Radiological Society of North America, the professional society for radiologists, medical physicists and imaging professionals, based in Oak Brook, Illinois and founded in 1915. It announces three /24s out of 192.203/16 — 768 addresses — with two observed BGP neighbours.
What it's used for
The society's own infrastructure. RSNA is not a hospital, a university or a service provider: it publishes peer-reviewed journals (Radiology and its family titles), runs a very large annual scientific meeting in Chicago, produces continuing-education material, and funds research grants through its Research & Education Foundation. All of that is delivered from a headquarters operation, and a few hundred addresses behind a couple of upstreams is a proportionate footprint for it. Two observed neighbours rules out any carrier or hosting role — this network buys transit, it does not sell it.
Notable
All three prefixes register to RSNA, org Radiological Society of North America. Announcer and registrant are the same body, so there is no leased-space question to resolve. The three /24s are non-contiguous within 192.203/16 (.117, .125, .126), which is normal for old Class C assignments handed out one block at a time rather than as an aggregate.
Interesting
The name invites two plausible misreadings. A "Society of North America" sounds like it might be a membership umbrella carrying other organisations' traffic, and the medical-imaging subject matter suggests a clinical or research network. Neither is what the routing shows. This is an association's corporate network, and the imaging expertise it is famous for lives in its publications and its meeting, not in its address space.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-27, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 4 prefixes · 17.15K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 4 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS11470- Registry name
- RSNA-ASN
- Registrant
- Radiological Society of North America
- Abuse contact
- monitor@rsna.org
- Registered
- 1998-09-02
- Last changed
- 2022-04-08
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 4 with no ROA
- ROAs
- 0 authorising AS11470
- ASPA
- no ASPA record
- IRR
- 25% registered · 1 of 4 announcements
- Route objects
- 1 naming AS11470
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 447 networks and 1,852 prefixes, as published 2026-10-27. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere